Newtown Jets will meet Penrith Panthers in the 2026 The Knock-On Effect NSW Cup Grand Final at CommBank Stadium on Saturday, 26 September.
The Jets secured their place by defeating Newcastle Knights 30-14 in a dominant preliminary-final performance.
Newcastle opened the scoring with Connor Votano's penalty goal, but Newtown quickly responded through prop Braden Uele after Jayden Berrell's clever pass.
Kristian Dixon converted, then Joe Nadenic extended the Jets' advantage by collecting a Riley Pollard kick.
Wilson De Courcey restored Newcastle's hopes before halftime, beating his defender and Taj Ford to score in the corner. Votano's conversion made it 12-8.
Newtown controlled the restart, with Sam Stonestreet scoring down the sideline before Jaxon Lavender finished another Pollard kick.
Lavender's try made the margin 24-8 and became the decisive moment, although De Courcey scored again to reduce the deficit to 24-14.
The Knights attacked repeatedly during the final 10 minutes, but Newtown's defence resisted before Dixon sealed the result with a late try.
Berrell's dummy-half work, the Jets' middle forwards and their bench impact gave Newtown consistent momentum through the ruck.
De Courcey was Newcastle's standout, scoring twice and threatening throughout. The Broncos-bound centre confirmed his NRL potential in defeat.
Ford remained influential after kicking two field goals the previous week and helped create Dixon's clinching score.
Newcastle's 72 per cent completion rate against Penrith the previous week had already been a concern, and further unforced errors again proved costly.